[I'm afraid I just discovered this in my drafts - for some reason I'd never actually published it. Sorry, but it somehow means too much to me to let it pass... Laika's Day was of course November 3rd.]
A lovely prayer from the Byzigenous Buddhapalian's blog - it's well worth reading the whole moving prayer
Hear our humble prayer, O God, for our friends the animals, especially for those animals that are suffering; for all that are overworked and underfed and cruelly treated; for all wistful creatures in captivity that beat against the bars; for any that are hunted or lost or deserted or frightened; for all that are in pain or dying; for all that must be put to death. We entreat for those who deal with them a heart of compassion, gentle hands, and kind words; that they may share thus the blessing of the merciful. For you, O lord, will save both human and beast, and great is your loving-kindness. Amen.
BB notes that it may be a Russian prayer, which would make it especially right for Laika's day...